Please enter the KEY SERIES followed by the DIFFER NUMBER for each key required. If the KEY SERIES is not shown, then just enter the DIFFER NUMBER; you will be prompted for more information later. If you require a large number of keys you can enter 10 at a time, then press Add To Order, you will then have the option to return to this form and enter more key numbers. For speed of entry use the TAB key on your keyboard to move to the next field. There are quantity discounts available on certain types of keys. These will be automatically calculated as you create your order.